Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 54, NWS Green Bay, WI

July 28, 2021Langlade County, Lincoln County, Marathon County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 28, 2021, 7:36 PM CDT for Langlade County, Lincoln County, Marathon County, Wisconsin. It was in force for 39 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 28, 2021, 7:36 PM CDT (00:36 UTC)
Expired: Jul 28, 2021, 8:15 PM CDT
In force: 39 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Langlade County, WI, Lincoln County, WI, Marathon County, WI

The radar

The Green Bay radar (KGRB), 151 km from the middle of the area, began a volume at 00:40 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jul 28, 7:36 PM CDT	HAIL 0.5	Merrill, WI
Jul 28, 7:51 PM CDT	HAIL 0.5	4 Sw Pine River, WI	REPORT FROM MPING: HALF-INCH (0.50 IN.).
Jul 28, 8:20 PM CDT	TSTM WND DMG	2 Ne Otis, WI	MULTIPLE TREES DOWN AND UPROOTED ALONG COUNTY K. PARTIALLY DESTROYED BARN AS WELL. REPORT VIA SOCIAL MEDIA. TIME ESTIMATED BY RADAR.
Jul 28, 8:23 PM CDT	TSTM WND DMG	Irma, WI	MULTIPLE TREES AND POWERLINES DOWN IN CITY...VIA SOCIAL MEDIA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 28, 7:17 PM CDT	Severe Thunderstorm Watch PDS	SPC	7 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.6 hours before the alert went out and 153 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 593 J/kg
Mixed-layer CIN: -264 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

291 
WUUS53 KGRB 290036
SVRGRB
WIC067-069-073-290115-
/O.NEW.KGRB.SV.W.0054.210729T0036Z-210729T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Green Bay WI
736 PM CDT Wed Jul 28 2021

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for...
  Southern Lincoln County in north central Wisconsin...
  Northeastern Marathon County in central Wisconsin...
  Southwestern Langlade County in north central Wisconsin...

* Until 815 PM CDT.

* At 736 PM CDT, a severe thunderstorm was located near Council
  Grounds State Park, or 20 miles northwest of Wausau, moving
  southeast at 55 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Merrill and Council Grounds State Park around 740 PM CDT.

Other locations impacted by this severe thunderstorm include Glandon,
Ackley Wildlife Area, Little Chicago, Schofield, Hamburg,
Nutterville, Otis, Sunset, Camp Phillips Scout Camp and Bill Cross
Rapids Wildlife Area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4541 8983 4517 8917 4481 8962 4514 9005
      4523 9005
TIME...MOT...LOC 0036Z 306DEG 49KT 4522 8983 

HAIL...1.00IN
WIND...60MPH
 
$$

EB

3 follow-up statements

017 
WWUS53 KGRB 290045
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
745 PM CDT Wed Jul 28 2021

WIC067-069-073-290115-
/O.CON.KGRB.SV.W.0054.000000T0000Z-210729T0115Z/
Lincoln WI-Marathon WI-Langlade WI-
745 PM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR SOUTHEASTERN LINCOLN...NORTHEASTERN MARATHON AND SOUTHWESTERN
LANGLADE COUNTIES...

At 745 PM CDT, a severe thunderstorm was located over Council Grounds
State Park, or 17 miles north of Wausau, moving southeast at 55 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southeastern Lincoln, northeastern Marathon and southwestern Langlade
Counties, including the following locations... Glandon, Ackley
Wildlife Area, Little Chicago, Schofield, Hamburg, Nutterville, Otis,
Sunset, Camp Phillips Scout Camp and Rib Mountain State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4517 8917 4481 8962 4513 8999 4522 8986
      4531 8966
TIME...MOT...LOC 0045Z 306DEG 49KT 4519 8977 

HAIL...1.00IN
WIND...60MPH
 
$$

EB

437 
WWUS53 KGRB 290053
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
753 PM CDT Wed Jul 28 2021

WIC067-069-290102-
/O.CAN.KGRB.SV.W.0054.000000T0000Z-210729T0115Z/
Lincoln WI-Langlade WI-
753 PM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LINCOLN AND
SOUTHWESTERN LANGLADE COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
central and north central Wisconsin.

LAT...LON 4512 8924 4481 8962 4512 8974
TIME...MOT...LOC 0052Z 306DEG 49KT 4513 8965 

$$

WIC073-290115-
/O.CON.KGRB.SV.W.0054.000000T0000Z-210729T0115Z/
Marathon WI-
753 PM CDT Wed Jul 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM CDT
FOR NORTHEASTERN MARATHON COUNTY...

At 752 PM CDT, a severe thunderstorm was located near Merrill, or 11
miles north of Wausau, moving southeast at 55 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Wausau, Weston, Rib Mountain, Rothschild, Schofield, Evergreen,
Sunset, Glandon, Camp Phillips Scout Camp and Nutterville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4512 8924 4481 8962 4512 8974
TIME...MOT...LOC 0052Z 306DEG 49KT 4513 8965 

HAIL...1.25IN
WIND...60MPH
 
$$

EB

142 
WWUS53 KGRB 290106
SVSGRB

Severe Weather Statement
National Weather Service Green Bay WI
806 PM CDT Wed Jul 28 2021

WIC073-290115-
/O.EXP.KGRB.SV.W.0054.000000T0000Z-210729T0115Z/
Marathon WI-
806 PM CDT Wed Jul 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MARATHON COUNTY
WILL EXPIRE AT 815 PM CDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However small hail, gusty winds and heavy rain
are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
central and north central Wisconsin.

LAT...LON 4512 8924 4481 8962 4512 8974
TIME...MOT...LOC 0105Z 306DEG 49KT 4503 8946 

$$

EB

The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 7:04 PM CDT	Special Weather Statement	GRB	Lincoln, Oneida, Vilas	41 min
Jul 28, 7:36 PM CDT	Severe Thunderstorm Warning	GRB	Oneida	39 min
Jul 28, 7:52 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln	53 min
Jul 28, 8:20 PM CDT	Special Weather Statement	GRB	Shawano	40 min
Jul 28, 8:37 PM CDT	Severe Thunderstorm Warning	GRB	Langlade, Lincoln, Marathon, Shawano	53 min
Jul 28, 8:58 PM CDT	Tornado Warning	GRB	Marathon	32 min
Jul 28, 9:05 PM CDT	Areal Flood Advisory	GRB	Langlade, Lincoln, Marathon, Shawano	3 hr
Jul 28, 9:21 PM CDT	Tornado Warning	GRB	Marathon, Portage	24 min
Jul 28, 9:22 PM CDT	Severe Thunderstorm Warning	GRB	Marathon, Portage, Shawano, Waupaca	53 min
Jul 28, 9:54 PM CDT	Tornado Warning	GRB	Portage, Waupaca	36 min
Jul 28, 10:10 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Portage, Waupaca, Waushara, Winnebago	65 min
Jul 28, 10:18 PM CDT	Severe Thunderstorm Warning	GRB	Wood	43 min
Jul 28, 10:35 PM CDT	Areal Flood Advisory	GRB	Marathon, Outagamie, Portage, Shawano, Waupaca, Waushara and 1 more	3 hr
Jul 28, 11:12 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waupaca, Waushara, Winnebago	45 min
Jul 28, 11:38 PM CDT	Tornado Warning	GRB	Winnebago	16 min
Jul 29, 3:42 AM CDT	Small Craft Advisory	GRB		23 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.